X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from mail-ww0-f50.google.com ([74.125.82.50] verified) by logan.com (CommuniGate Pro SMTP 5.4c3j) with ESMTPS id 4962614 for flyrotary@lancaironline.net; Sat, 30 Apr 2011 09:09:34 -0400 Received-SPF: pass receiver=logan.com; client-ip=74.125.82.50; envelope-from=rwstracy@gmail.com Received: by wwc33 with SMTP id 33so3939780wwc.7 for ; Sat, 30 Apr 2011 06:08:58 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:in-reply-to:references:date :message-id:subject:from:to:content-type; bh=PxY78gnVo7S71WYqjIOx3XUPmhpl4qP5qqaDmOnFa2U=; b=a2+UELWW2OENuJeulBKeUah8ptngIAhGkHxh1UxmKj1nYvV0+fBtaT1L7exFlB/k0+ T1Rf8GaSk89PfDB8kO7v3QguP+i1rJ0b2MSiMHBN3woPOOQz9QMkm3vrrdVjfztc1sWt xRLjSNFkt59mg+m9YeWLPTOz0pWoUh9Uhc+mE= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :content-type; b=kiDXcjQKzhgrIQTNBl2h+Nlx71k4EALT3zX0W0ruDq3pDWo0bdttjMwMInL5RXvvQ0 Fqi/jP6Nw6dyBKc0LWMr1/LgrujFU99eaL2+QleMSh85Nud6DWaHISIHbqQ5cHutU1TT g4kLh7hR0IV/fqr4/EFw8OeSYqqaAHnxJuqAk= MIME-Version: 1.0 Received: by 10.216.134.66 with SMTP id r44mr578431wei.92.1304168938157; Sat, 30 Apr 2011 06:08:58 -0700 (PDT) Received: by 10.216.190.132 with HTTP; Sat, 30 Apr 2011 06:08:58 -0700 (PDT) In-Reply-To: References: Date: Sat, 30 Apr 2011 09:08:58 -0400 Message-ID: Subject: Re: [FlyRotary] Timing Question for Tracy From: Tracy To: Rotary motors in aircraft Content-Type: multipart/alternative; boundary=0016e6d647ca4934ea04a2227eab --0016e6d647ca4934ea04a2227eab Content-Type: text/plain; charset=ISO-8859-1 There's never a simple yes or no answer to this stuff. The EC2/3 can move the entire timing curve up or down by 10 degrees in 1 degree steps. But, if for instance you retarded the trigger wheel by 10 degrees and made up for it by advancing the EC2/3 timing adjustment by 10 degrees, the controller would probably be unable to deliver the full range of ignition advance when at low manifold pressure (same as 'vacuum advance' in a car). So, I would recommend that the trigger wheel not be moved from the stock location. Tracy On Sat, Apr 30, 2011 at 12:41 AM, Kelly Troyer wrote: > Tracy, > I will try to be more clear............If the stock position of the > sensor is moved slightly > in relation to the trigger wheel can the EC2-3 compensate or does the > trigger wheel > have to be repositioned to regain the stock timing relative to TDC > ?............... > > Thanks, > > Kelly Troyer > *"DYKE DELTA JD2" (Eventually)* > > "13B ROTARY"_ Engine > "RWS"_RD1C/EC2/EM2 > "MISTRAL"_Backplate/Oil Manifold > > "TURBONETICS"_TO4E50 Turbo > > > ------------------------------ > *From:* Tracy > *To:* Rotary motors in aircraft > *Sent:* Fri, April 29, 2011 8:24:34 PM > *Subject:* [FlyRotary] Re: Back-plate Photos > > Tracy, > > I have a couple of questions for you about your RV4 Renesis > engine.................Are you using the stock Renesis ignition sensor > and is it mounted mounted on the Renesis front cover > mounting ??..............When the Renesis trigger wheel and sensor are in > the > stock position what is the engine timed at (BTDC) before any computer > (stock and/or EC2-3) correction (static timing) ??.......... > > Thanks, > > Kelly Troyer > > Yes, my Renesis has the stock crank position sensor in stock location. > > I may not understand your timing question Kelly but there simply is no > correlation between the crank position sensor timing and any ignition > timing. The computer is just getting an arbitrary (but well defined) crank > position from the sensor & trigger wheel. It can make the timing anything > it wanted to with that information. Without the computer there can be no > such thing as static ignition timing with a trigger pattern from the RX-8 > setup. > > Tracy > > > > --0016e6d647ca4934ea04a2227eab Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable There's never a simple yes or no answer to this stuff. =A0 =A0 The EC2/= 3 can move the entire timing curve up or down by 10 degrees in 1 degree ste= ps.=A0 But, if for instance you retarded the trigger wheel by 10 degrees an= d made up for it by advancing the EC2/3 timing adjustment by 10 degrees, th= e controller would probably be unable to deliver the full range of ignition= advance when at low manifold pressure (same as 'vacuum advance' in= a car).=A0=A0 So, I would recommend that the trigger wheel not be moved fr= om the stock location.

Tracy

On Sat, Apr 30, 2011 at 12:41 A= M, Kelly Troyer <kel= tro@att.net> wrote:
Tracy,
=A0=A0=A0 I will try to be more clear............If the stock position= of the sensor is moved slightly
in relation to the trigger wheel can the EC2-3=A0 compensate or does t= he trigger wheel
have to be repositioned to regain the stock timing relative to TDC ?..= .............
=A0
Thanks,
=A0
=A0Kelly Troyer
"DYKE DELTA JD2" (Eventually)

"13B ROTARY"_ Engine
"RWS"_RD1C/EC2/EM2
"= MISTRAL"_Backplate/Oil Manifold

"TURBONETICS"_TO4E50 Turbo



From: Tracy <rwstracy@gmail.com>
<= b>To: Rotary motors in aircraft= <flyro= tary@lancaironline.net>
Sent: Fri, April 29, 2011 8:= 24:34 PM
Subject: [FlyRot= ary] Re: Back-plate Photos

Tracy,
=A0
=A0=A0=A0 I have a couple of=A0questions=A0for you about your RV4 Rene= sis engine.................Are you using the stock Renesis ignition sensor<= /div>
=A0and is it mounted mounted on the Renesis front cover mounting=A0??.= .............When the Renesis trigger wheel and sensor are in the
=A0stock position what is the engine timed at (BTDC) before any comput= er (stock and/or EC2-3) correction (static timing) ??..........
=A0
Thanks,
=A0
Kelly Troyer

Yes, my Renesis has the stock crank posit= ion sensor in stock location.

I may not understand your timing quest= ion Kelly but there simply is no correlation between the crank position sen= sor timing and any ignition timing. =A0 The computer is just getting an arb= itrary (but well defined) crank position from the sensor & trigger whee= l.=A0 It can make the timing anything it wanted to with that information.= =A0 Without the computer there can be no such thing as static ignition timi= ng with a trigger pattern from the RX-8 setup.

Tracy

=A0


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